The X-Grip adapts the ETS 9 round .380 magazines for use in the G42 pistols, incorporating the larger magazine into the grip, and increasing the gun's capacity. Law enforcement and military personnel can carry the Glock 42 with a standard magazine when concealment is important, then insert the ETS 9 round magazine with the XGRIP when maximum firepower and capacity become critical.The X-Grip has been designed to flow seamlessly into the design of the handgun itself, reinforcing the aesthetics of the classic GLOCK look. Its unique design is based on the anthropometrics of the hand and wrist and results in significantly improved comfort, control and accuracy. DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.